Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
Four identical electrical lamps are labelled 1.5 V 0.5 A which describes the condition necessary for them to operate at normal brightness. A 12 V battery of negligible internal resistance is connected to lamps as shown, then
21
Sep
Four identical electrical lamps are labelled 1.5 V 0.5 A which describes the condition necessary for them to operate at normal brightness. A 12 V battery of negligible internal resistance is connected to lamps as shown, then then Two bulbs X and Y having same voltage rating and of power 40 watt and 60 watt [...]
The resistance of a heater coil is 110 ohm. A resistance R is connected in parallel with it and the combination is joined in series with a resistance of 11ohm to a 220 volt main line. The heater operates with a power of 110 watt. The value of R in ohm is
21
Sep
The resistance of a heater coil is 110 ohm. A resistance R is connected in parallel with it and the combination is joined in series with a resistance of 11ohm to a 220 volt main line. The heater operates with a power of 110 watt. The value of R in ohm is then Two bulbs [...]
In the circuit as shown in the figure, the heat produced by 6 ohm due to current flowing in it is 60 calorie per second. The heat generated across 3 ohm resistance per second will be
21
Sep
In the circuit as shown in the figure, the heat produced by 6 ohm due to current flowing in it is 60 calorie per second. The heat generated across 3 ohm resistance per second will be In the circuit as shown in the figure the heat produced by 6 ohm due to current flowing in [...]
Water boils in an electric kettle in 15 minutes after switching on. If the lenght of the heating wire is decreased to 2/3 of its initial value, then the same amount of water will boil with the same supply voltage in
21
Sep
Water boils in an electric kettle in 15 minutes after switching on. If the lenght of the heating wire is decreased to 2/3 of its initial value, then the same amount of water will boil with the same supply voltage in then the same amount of water will boil with the same supply voltage in [...]
In the circuit shown in the figure, the heat produced in 5 ohm resistance is 10 calories per second. The heat produced in 4 resistance is
21
Sep
In the circuit shown in the figure, the heat produced in 5 ohm resistance is 10 calories per second. The heat produced in 4 resistance is In the circuit shown in the figure: the heat produced in 5 ohm resistance is 10 calories per second. The heat produced in 4 resistance is September 21, 2020 [...]
Two bulbs X and Y having same voltage rating and of power 40 watt and 60 watt respectively are connected in series across a potential difference of 300 volt, then
21
Sep
Two bulbs X and Y having same voltage rating and of power 40 watt and 60 watt respectively are connected in series across a potential difference of 300 volt, then then Two bulbs X and Y having same voltage rating and of power 40 watt and 60 watt respectively are connected in series across a [...]
Some electric bulb are connected in series across a 220 V supply in a room . If one bulb is fused the remaining are connected again in series across the same supply. The illumination will be
21
Sep
Some electric bulb are connected in series across a 220 V supply in a room . If one bulb is fused the remaining are connected again in series across the same supply. The illumination will be Some electric bulb are connected in series across a 220 V supply in a room . If one bulb [...]
What will happen when a 40 W, 220 V lamp and 100 W, 220 V lamp are connected in series across 40 V supply ?
21
Sep
What will happen when a 40 W, 220 V lamp and 100 W, 220 V lamp are connected in series across 40 V supply ? 220 V lamp and 100 W 220 V lamp are connected in series across 40 V supply ? What will happen when a 40 W September 21, 2020 Category: Uncategorised [...]
Electric bulb 50 W – 100 V glowing at full poer rate to be used in parallel with battery 120 V, 10 ohm. Maximum number of bulbs that can be connected so that they glow in full power is
21
Sep
Electric bulb 50 W – 100 V glowing at full poer rate to be used in parallel with battery 120 V, 10 ohm. Maximum number of bulbs that can be connected so that they glow in full power is 10 ohm. Maximum number of bulbs that can be connected so that they glow in full [...]
A constant current i is passed through a resistor. Taking the temperature coefficient of resistance into account, indicate which of the plots shown in Figure best represents the rate of production of thermal energy in the resistor
21
Sep
A constant current i is passed through a resistor. Taking the temperature coefficient of resistance into account, indicate which of the plots shown in Figure best represents the rate of production of thermal energy in the resistor A constant current i is passed through a resistor. Taking the temperature coefficient of resistance into account indicate [...]